Magazine for machine gun pistols



Sept. 20, 1938. H. J. KOBE 2 MAGAZINE FOR MACHINE GUN PISTILS 2Sheets-Sheet 1 Filed Dec'. 1l, 1934 7, f//a @w I Sept. 20, 1938. H JKQBE MAGAZINE FOR MACHINE GUN-PISTOLS Filed Dec. 11, 1954 2 Sheets-Sheet2 Patented Sept.' 20, 1938 u rre' STATS MAGAZINE Fon moms GUN Pls'roicsHerman J. Kobe, Bryan, hi'assignor of one- ,tenth to Lisle M. Weaver,Bryan, Ohio Application December 11, 1934, Serial No. 757,013

7 Ciaims.

My invention relates generally to firearms and particularly to a machinegun pistol involving a cartridge magazine enabling setting the pistol tofire continuously automatically until the supply of cartridges isexhausted, or to fire a predetermined number of the cartridges less thanthe total number thereof which are in the magazine in the mentionedcontinued automatic manner, or to re single cartridges automaticallyeach time the trigger is pressed, and an important object of myinvention is to provide an automatic pistol of the character indicatedwhich is small in size and light in weight, and can be carried in aholster.

Another important object of my invention is to provide a cartridgemagazine for an automatic or machine gun pistol which is small andcompact and narrow and lies chieiiy Within the plane of the handle ofthe pistol, and which does not protrude laterally beyond the sides oithe pistol.

Another important object of my invention is to provide a pistol of thecharacter described above which contains a magazine arranged so that thecartridges are moved from an initial position in the magazine at rightangles to the barrel to a position in alignment with the barrel, in sucha way as to positively preclude jamming of the cartridges during thefiring of the pistol.

Other objects and/advantages of my invention will be apparent from areading of the following description in connection with the drawings,wherein for purposes of illustration I have shown a. preferredembodiment of my invention.

In the drawings:

Figure 1 is a longitudinal sectional view taken through the pistol in aplane which lies slightly to the left of the longitudinal center of thepistol so as to show the interior mechanism of the magazine and theinterior mechanism of the pistol per se.` l i Figure 2 is a left handside elevational view of the magazine.

Figure 3 is an approximately central transverse sectional view throughFigure 2 taken approximately on the line 9-9 and looking toward theright in the direction of the arrows.

Figure 4 is a top plan view'of Figure 2.

Figure 5'is a perspective view of the spring containing drum of themagazine.

. Figure 6 is a perspective view of the latch plate securing screw.

Figure 7 is a perspective view of the latch plate.

Figure 8 is a perspective view of the cartridge follower. H

Referring in detail to the drawings, the numeral 5 generally designatesa Vpistol body on which is mounted a slide and the barrel, and whichincludes a butt portion 6 and the handle portion'i. Just forward of thehandle is the opening 8 through which the cartridges are fed from the'magazine 85 into the ring chamber.

Depending from the underside of the front end of the barrel is a pair ofkeyhole-shaped mem- 'bers 34 which are arranged'to be positioned infront of similarly formed members 25 on the slide when the barrel andthe slide are assembled; and from the rear end of the barrel 20 dependsthe block 35 with the opposite side grooves IQ which engage the barrellocking pins I8 for locking the barrel engaged with the slide and withthe body of the pistol.

The member 28 contains on its front end the extracting ring 36 andlnteriorly the firing pin 3l which is surrounded by an actuating spring38 which normally retracts the ring pin inwardly through the opening inthe front end of the member 28 after striking the cartridge 39. The bodyof the ilring pin has a slot 40 in which is a retaining pin 4| relativeto which the ring pin is slidable. 'Ihe rear end of the firing pin whichis normally retracted by the spring 38 extends into the hollow part ofthe butt portion of the body of the pistol as indicated in Figure 1where it can be struck by the upright portion 62 of the hammer 63 whichis L-shaped in form as shown and slidably mounted on the hammer mountingpin M which carries the spring t5 pushing the same forwardly. Theunderside of the rear and horizontal portion of the hammer 43 has adepending triangular dog 65 which is engaged by a part of the hammerlock 41. Pivoted to the trigger as indicated at 6l is a springpressedtrigger latch 68 which is notched to engage With a dog on the triggerlatch for the hammer lock which immediately engages the hammer lockrelease latch 65 which is pivoted in the body of the pistol as indicatedat l0 and has a rounded nose 'H engaging in a rounded notch in thedepending part 1| of the hammer lock 12 which has the spring 'F3positioning the same forwardly and downwardly as shown in Figure 1, alug on the bottom of the hammer lock being engaged with the upper end ofthe spring 13. The' machine gun latch is slidably mounted ina slot inthe forward part of the hammer lock and has a depending fork between thetines of which is engaged the rounded nose on the upper part of thespring-pressed lever 'it which is pivoted in the body and has its lowerend and the rear side thereof .engaged by the spring# pressed trip whichis L-shaped in form and has the stem 8| working in the tube 82 which ismounted on the rear of the butt of the pistol body and is normally outpressed by the spring 83 so that a tendency exists to .tilt the machinegun latch forwardly.

The magazine which is shown in Figure i and in Figures 2 through 8,inclusive, is generally designated 85 and comprises a sheet metal orother suitably fabricated shell the main portion of which is cylindricaland has the forward tangential extension 80 and the rear upwardextension 8l, and the horizontal wall 88 extending between thesetangential extensions and abutting the underside of the body part 5 ofthe pistol. The wall 88 has a slot 8S through which passes the hookedlug 90 on the lower side of the body part for the purpose of engagingthe hooked head 9| of the magazine latch 92 which ispivoted as indicatedat 93 between the side walls 963 and 95. The lower part of the latch 92is accessible through an opening in the front end of the magazine casing85 as indicated in Figlires 1 and 2. A boss or lug 96 on the rear wallportion of the upward extension 81 is arranged to engage a notch 91 inthe rear wall of the opening 8 in the body through which-the extension8l extends into position to deliver the `car tridges into the ringchamber of the pistol.

Transversely spaced guide strips 98 and 98 spiral radially outwardlyfrom the point 99 to form the cartridge channels, which spiral untilthey meet the point |00 where they join the forward wall of the upwardprojection 8l. Radially outwardly of the last-mentioned portion of theguide strips isl the radially outward channel which is defined by themost radially outward portion of the guide strips and the curved wall|0| of the magazine casing, the last-mentioned channel leading directlyinto the lower part of. `the extension 8l.

The cartridges 39 lie across the space between the opposed guide stripsand in the channels dened thereby so as to have theirvaxes approximatelyat right angles to the longitudinal axis of the bore |02 of the barrel.Beginning at the lower part of the extensions 81 the channel isgradually turned from its transverse to a longitudinal position,l so asto gradually turn the cartridges as they are fed therein from thementioned transverse position to a position in which they are inlongitudinal alignment with theaxis of the bore of the barrel, and inthis position ready to be received into the tiring chamber. The smoothand even and gradual travel and change of position of the cartridges asthey are fed into the firing chamber or into position to be depositedinto the firing chamber positively prevent the occurrence of any jammingof the pistol during its operation.

It will be observed that the engagement of the wall 88 of the magazinecasing with the barrel latch keeps the barrel latch positively locked sothat disassembly of the barrel or -loosening thereof cannot occur whilethe magazine is in position. It will be observed that left hand pullingoi' the magazine latch 92. will disengage the same from the hook member90 and that when this disengagement has taken place the maga-- zine maybe pulled away from vthe pistol and another magazine substituted.

Approximately centrally within the guide strips 98 Iand centrally of themagazine casing and,

journaled in bosses on the side walls 96, is thev axle |03 which hasengaged therewith as indicated at los the web los of the drum generallydesignated |06 which contains on oppositeI sides of the web |05 thespiral springs |07 and |03, respectively, which are attached to the axleby the respective pins |08 and |09 at their inner ends and have theirouter ends pinned as indicated at I I0 to the interior of thecircumferential portion of the drum. The drum has extendingapproximately normal to the periphery thereof` the channel-shaped member|I| which communicates with the opening ||2 adjacent thereto to permitthe insertion in the drum of the follower which is generally designatedH3 and which is bifurcated as-indicated at H9 to provide legs ||5 and||6 which go on opposite sides of the axle as indicated in Figure 3 whenthe follower is inserted through the opening ||2 by passing the samethrough the channel Ill, from which channel the transverse head |I`|extends 4through the extension 8`| and into the firing chamber of thepistol. One end of the drum |06 is provided with a latch disk ||9 whichis located in an opening in the left side of the magazine and isprovided with a peg |20 to engage a hole in a latch plate to bedescribed and is additionally provided with holes |2|.

The peg is to be engaged with the hole |22 in the latch plate |23 whichhas on its circumference the catch |24 which engages the latches to bedescribed, the disk |23 also being provided with holes I254to correspondwith the holes I2 I which holes selectively receive pins |26 on the headof a screw |21 which is threaded into the end of the axle |03 as shownat |09. I

On diametrically opposite sides of the opening in the wall 913 in whichthe structure described immediately above is located are pivoted asindicated at |28 and |29 the 10-shot latch |30 and the ZO-shot latchI3I. The l0-shot latch |30 is arranged to be swung to a position toengage the catch |20 on the disk |23, which disk |23 is pinned to theaxle |03 by the pins |26 which pass into the end of the axle, so thatwith the lO-shot latch |30 set, the gun can be ired only ten timessubsequent to the point at which the latch is set. With the latch |3|-similarly set and the latch |30 not set, the pistol may be fired twentytimes from vthe point at which the latch is set. With the latches |30and I3! disengaged, full automatic machine. gun firing of the pistol toempty the magazine completely may be carried out, as well as single shotemptying of the magazine. The magazine is intended to hold fiftycartridges, although a greater or a less number may be arranged for.

It will be observed that the magazine need be no wider than the lengthof the cartridges used or not substantially so, so that the magazineneed not be considerably wider and may be narrower than the thickness orwidth of the pistol and be of such dimensions to be not greatly largerthan an ordinary trigger guard, if desired, so that no l 2,180,722 otherthan that herein described for illustrativeA purposes.

Although I have shown and described herein a preferred embodiment of myinvention, it is to be definitely understood that I do not desire tolimit the application of the invention thereto, and any change orchanges may be made in the materials and in the structure andarrangement of the parts, within the spirit of the invention and thescope of the subjoined claims.

What is claimed is: l

l. A cartridge magazine for a machine gun pistol of .the type having abarrel including a breech portion, said magazine comprising a narrowcontainer arranged to lie within thesides and under the barrel of thepistol and having al vertical substantially tangential delivery neckreaching to a position immediately below said breech portion, saidcontainer including a spiral Acartridge holding and guiding channel inwhich tion into substantial parallelism with the bore of breech; saidcartridge magazine comprising al the barrel, and rotary spring actuatedmeans in said container pushing the cartridges along said channel.

2. A cartridge magazine for a machine gun pistol of the type having abarrel including a breech portion, said magazine comprising a narrowcontainer arranged to lie in the plane o! the pistol and having avertical substantially tangential delivery neck reaching to a positionimmediately below said breech portion, said container including a spiralcartridge holding and guiding channel in which the cartridges lietransversely of the pistol, said channel having a portion in said neckholding and guiding the cartridges into said breech portion intosubstantial parallelism with ,the bore of the barrel, and rotary springactuated means in said container pushing the cartridges along saidchannel, said breech portion being arranged to act as a stop for theuppermost cartridge in said delivery neck while said barrel is ininitial position, said breech being arranged to assume another positionin which it is remote from the upper end of said neck and the uppermostcartridge in said neck is permitted to be moved by said rotary springactuated means from said neck into axial alignment with the bore of saidbarrel.

3. A cartridge machine for a machine gun pistol, said machine gun pistolincluding a body. a reciprocable barrel mounted on said body and havinga loading breech, said body being formed with an opening aiording accessto said loading casing, means detachably connecting the iront end ofsaid casing to a part o1 said body forwardly of said opening whereby thetop of the casing is positioned along the underside of said body, acartridge delivery neck rising from said casing at a point to the rearof said means and extending into said opening, parallel walls withinsaid casing` arranged to deilne a spiral cartridge handling channelleading into said cartridge delivery neck, the axis of said spiralchannel being horizontal and transverse with respect `to thelongitudinal axis of said body, saidcar- -tridge delivery neck having acartridge positicn ing conduit into which said cartridge handlingchannel leads, said cartridge positioning conduit being curved to turnthe cartridges from their transverse position to a position in axialalignment with said barrel as the cartridges are delivered to saidbreech, and spring operated follower means in said casing and working insaid cartridge handling channel for pushing the cartridges through saidcartridge positioning' conduit.

4. A cartridge magazine for a machine gun vertical delivery neckreaching to a position immediately below said breech portion, said con-"tainer including a'spiral cartridge holding and guiding channel inwhich the cartridges lie transversely of the pistol, said channel havinga portion inksaidneck defining a cartridge holding and guiding conduitopening into said breech portion'into substantial. parallelism with thebore of the barrel, and rotary spring actuated means in said containerpushing the cartridges along said channel and said conduit, said rotaryspring actuated means comprising a .spring operated rotor mounted withinsaid casing and within the inner convolution of said spiral channel, and

' a radial arm projecting from said rotor and working through a slotformed in the radially inward wall oi said spiral cartridge handlingchannel and engaging the last cartridge in the channel.

5. A cartridge magazine for a machine gun.

pistol of the type having a barrel including a breech portion', saidmagazine comprising a. narrow container arranged to liewithin the sidesand under the barrel of the pistol and having a vertical delivery neckreaching to a position immediately below said breech portion, saidcontainer including a spiral cartridge holding and guiding channel inwhich the cartridges lie transversely of the pistol, said channel havinga portion in said neck deiining a cartridge holding and guiding conduitopening into said breech portion into substantial parallelism with thebore of the barrel, and rotary spring actuated means in said containerpushing the cartridges along said channel and said conduit; said rotaryspring actuated means comprising a spring operated rotor mounted withinsaid casing and within the inner convolution oi said spiral channel, anda radial arm projectingy from said rotor and working through a slotformed in the radially inward wall of said spiral cartridge handlingchannel and engaging the last cartridge in the channel, said radial armbeing radially extensible to follow the outer convolutions 'of saidcartridge handling channel. y

6. A cartridge magazine for a machine gun breech portion, said magazinecomprising a narpistol oftheitype having a barrel including \arowcontainer arranged to lie within the sides and under the barrel of thepistol and having a vertical delivery neck reaching to a positionimmediately below said breech portion, said container including a.spiral cartridge holding and guiding channel in which the cartridges lietransversely oi the pistol, said channel having a portion in said neckholding and guiding Athe cartridges into said breech portion intosubstantial parallelism with the bore of the barrel, and rotary springactuated means in said container pushing the cartridges along saidchannel, said rotary spring actuated means comprising a spring operatedrotor mounted within ysaid casing and within the inner convolution ofsaid spiral channel, and a radial arm projecting from the radiallyinward wall of` said spiral cartridge handling channel and engagingthe-last cartaidge in the' channel, said radial arm being radiallyextensible to follow the outer convoluticns of said cartridge handlingchannel, and means for coordinately extending said radial alIri.

I '7. A cartridge magazine for a machine gun pistol of the type having abarrel including a breech portion, said magazine comprising a narrowcontainer arranged to lie within the sides and under the barrel of thepistol and having a vertical delivery neck reaching to a positionimmediately below said breech portion, said container including a spiralcartridge holding and guiding channel in which the cartridges lietransversely 'of the pistol, said channel having a portion in said neckholding and guiding the cartridges into said breech portion intosubstantial parallelism with the bore of the barrel. and rotary springactuated means in said container pushing the cartridges along saidchannel, said rotary spring actuated means comprising a spring operatedrotor mounted within said casing and within the inner convolution ofsaidl mining the amount of rotation of said rotor and arm to limit thenumber of cartridges delivered by the magazine, isaid lock means havingelements mounted on said casing and adjustable to engage parts of saidrotor.

HERMAN J. KOBE.

